Millions of them that descended upon the Russian village of Mikoltsy near Myadel, Belarus, in the Minsk region on May 14. The mosquitoes were so loud that even cars could not be heard. Photographer Dennis Sour managed to capture this unusual phenomenon. Such activity of mosquitoes is probably caused by the weather. Last year in Pakistan, rising flood waters drove millions of spiders up into the trees where they wove webs completely cocooning the trees.